Carriage stop



Dec. 7, 1948. Y R. A. MONKIEWICZ 2,455,793

CARRIAGE STOP Filed July 10, 1947 2 Sheets-Sheet l Inventor Rudolf A. Monklbwicl Dec. 7, 1948.

Filed Jul 10, 1947 .1 R. A. MONKIEWICZ CARRIAGE STOP 2 Sheets-Sheet 2 lwllllll Inventor Rudolf A. Mankiewicz' Patented Dec. 7, 1948 NITE STATES wmuaon AliMonkiewicz; North runwwnaa; N. :Y;

Applicationfiulyllo,

. 3==Cla:i.ms.

This invention relates to a carriage stop teatobe clamped totheibed of a latheand t lpriin'ary object tojlimit the advance of rriage of the lathe toward thefface ther'obielctiis to enable the Ttoolnffthe lathe fro er positionedwlthrelationtothework L t. .te thesetting up'ofjobsinthe'lathe. fIAmolng s features :mydnvention :mbodies a bracket adapted to i be clamped to the bed or a er .fe'a'tures .iriclutle lprovidin-g in the stop a mumm or longitudinally spaced notches, j 1 jt irotate about an Iaxis 'whichlies parallel to the longitudinal axis lojrpthe stopfbar, and a spiral rib o the periphery idf meummrsremiahee intosllccessiveiiotches g Eignne 2 is an enlarged plan; view of distal 240 1 d ligure aiis a front view inwelevation or :the

.mge ,stoplillustrated in Figure l;

carriagestop illustrated in Figure 2; v t

Figure 4 is a side view of the carriage stop illustrating it mounted on a lathe bed, certain portions being shown in section more clearly to illustrate certain details of constructiomfand Figure 5 is a fragmentary enlarged sectional 'view taken substantially along the line 5-5 of Figure 2.

Referring to the drawings in detail a lathe designated generally I is provided with a bed having longitudinally extending ways II, and mounted for rotation adjacent one end of the lathe bed is a conventional face plate I! carrying conventional work clamps IS in which the work is I d indperative positionfon the face plate. u editor longitudinal sliding "movement :on "ll {is "ai'conventionaltool tcarriage 114 wh le is "adapted to advance toward the face "filate tZ ,oribe moved "awaythere'from along the way if v v C mpeuesibya olampinfg'plate 1'5 and'a clamp so ew lfiftothe bed"'lfllofitheilatheis aba'se'plate flflfbf b cketfiesignatedgener'ally f8. Formed l0 "atorr nd'lof vjtlie basejilla'te11"! is a head 19 which is ottdd'as ammo form afpaii"ofspacetl parallel upstanding arm which are pierced with aligning openings-far thereceptionpf 'aspintile 2 I {the axis of which lies parallel with the longitudinal axis d ofthelathey fMouiitedi or rotation on hin thes'lot 02B is a drum 22carryeriphery alsipiral rib 23 the outer pek "ch preferably knurled. fEXt dingthrou'gh hehea'd T9 ,above and in *2! thebdttom wall "25 or which lies in a plane which lies tangent .to theperip'hery o'f the .drum 21am mm d in one of the ears romeo 'Joy the 7D a nauy screw lthreaded aperture H onio'f the threaded shank 26 I a gc iamp serew which cooperates with the imposin wan in "the :swtfu in clamping .a stop tar wbe more "fairy hereinafter described in .place. Thewsorew .26 is provided with a suitable han'i'iIe Z'I by which it ma be rotated.

fi eatedtin the groove 24 is .a stop bar desigjnafte'd l gener ally "28 comprising .an elongated body which isjsubstantially square in cross section idesighatdizll and kformed in one side of said A I'ho'dy"isia1longitudinalgroove .30 the purpose of "which will be more Ltiilly hereinafter explained. tlF orinedfliin the face of the body opposite the .r ooveiflr .a ",rownofjlongitudinally spaced transt ersay extending-notches or grooves 3| which lie talong angles horresponding to the pitch angle tof-jthe' ribii when thestop bar 28 lies inthe groove Tithe rib 23 engages in a groove 3| so that as the drum 22 is rotated the stop bar may be moved longitudinally through the slot 24. It will be understood of course that the distance between the grooves or notches 3| is such that before the rib 23 leaves one of the grooves or notches 3| it will have entered an adjacent groove or notch 3|, thus permitting the bar to be fed from one end to the other by rotation of the drum 22 and without perceptible interruption when the spiral rib 23 leaves one notch and enters the other.

Inorder to hold the stop bar 28 against accidental shifting, once it has been adjusted by rotation of the drum 22 I support at opposite ends of the spindle 2| yokes 32 which are secured in place by suitable set screws 33 and are provided with upwardly extending arms 34 having hook-shaped heads 35 which are adapted to overlie the upper grooved surface of the body 29 as will be readily understood upon reference to Figures 4 and 5. The ends of the arms 34 opposite those which are coupled to the spindle 2| are joined by a cross bar 36, and formed in each head is a recess 3'! which extends inwardly from the face of the head which overlies the grooved face of the bar 29, and seated in each recess 31 is a compression coil spring 38 which bears on a detent 39 in order frictionally to hold the stop bar 28 in proper position within the groove 24.

In use the carriage stop is clamped on the bed of the lathe in approximately the position i in which the carriage I4 is to be arrested. The clamp screw 26 is loosened and upon rotating the drum 22 it will be evident that the stop bar 28 may be moved longitudinally within-the head l8 to the desired position. It is preferred that the drum 22 be provided with suitable graduations 49 which are adapted to cooperate with any suitable reference point on the head such as'the forward edge of the adjacent notch 24 in obtaining the adjustment desired. When the rod or stop bar 28 has been properly adjusted, the clamp screw 26 is turned by rotating the handle 21 to move the point thereof into clamping engagement with a side of the stop bar 28 in order to lock the bar against further movement.

By the use of the carriage stop it is obvious that the tool carriage l4 may be advanced toward the face plate I2 of the lathe until it encounters the end of the stop bar 28, and an extremely accurate adjustment of the motion of the carriage may be had by simply rotating th'e drum 22 to bring the tool into proper relationship with the work in the lathe.

While in the foregoing there has been shown and described the preferred embodiment of this invention it is to be understood that minor changes in the details of construction, combination and arrangement of parts maybe resorted to without departing from the spirit and scope of the invention as claimed.

Having described the invention, what is claimed as new is:

l. A carriage stop for a lathecomprising a bracket adapted to be clamped to the bed of a lathe, said bracket having a groove opening through its top and extending therethrough in parallel relation to the longitudinal axis of the lathe bed, a drum mounted in the bracket to rotate about an axis which lies parallel to the groove, the periphery of the drum lying tangent to the plane of the bottom of the groove, a stop bar movable longitudinally through the groove, said stop bar having longitudinally spaced 4 notches in its underside, a spiral rib extending outwardly from the drum for entrance into successive notches in the stop bar whereby when the drum is rotated the stop bar will be moved along its longitudinal axis and a bar retainer pivoted to each end of the bracket for engagement with the stop bar releasably to retain it in the groove. 2. A carriage stop for a lathe comprising a bracket adapted to be clamped to the bed of a lathe, said bracket having a groove opening through its top and extending therethrough in parallel relation to the longitudinal axis of the lathe bed, a drum mounted in the bracket to rotate about an axis which lies parallel to the groove, the periphery of the drum lying tangent to the plane of the bottom of the groove, a stop I bracket adapted to be clamped to the bed of a lathe, said bracket having a groove opening through its top and extending therethrough in parallel relation to the longitudinal axis of the lathe bed, a drum mounted in the bracket to rotate about an axis which liesv parallel to the groove, the periphery of the drum lying tangent to the plane of the bottom of the groove, 9. stop bar movable longitudinally through the groove,

said stop bar, having longitudinally spaced RUDOLF A. MONKIEWICZ.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,401',669' Calhoun Dec.'27, 1921 1,480,522 Ferguson Jan. 8, 1924 1,582,077 Palmer Apr. 2'7, 1926 

